Home / 409,317,518.70-613,976,278.05-225,013,779.90

Finding the Fourth Proportional to 409,317,518.70, 613,976,278.05 and 225,013,779.90

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Solution

The fourth proportional to 409,317,518.70, 613,976,278.05 and 225,013,779.90 is: 337,520,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,317,518.70 : 613,976,278.05 = 225,013,779.90 : x
  2. Step 2: Convert to fraction form
    409,317,518.70/613,976,278.05 = 225,013,779.90/x
  3. Step 3: Cross multiply
    409,317,518.70x = 613,976,278.05 × 225,013,779.90
  4. Step 4: Simplify right side
    409,317,518.70x = 138,153,123,092,963,888
  5. Step 5: Solve for x
    x = 138,153,123,092,963,888/409,317,518.70
  6. Step 6: Final answer
    x = 337,520,669.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.